No, my coal fire and back boiler were extremely efficient as it happens, and significantly cheaper than my current gas bill in 2016. Much higher maintenance though, folk these days don't have half an hour spare to empty cinders and restoke a fire, far too busy drinking wine.

Laser pointers just don't sit into society, and the general age group of appeal is 10-20, used for driving cats mental chasing a red dot or shining into peoples windows to spook them.

There's one in my laser level as well, and one in my mate's ultrasonic tape measure. I know some guys who have them attached to their Airsoft guns, plenty of people who still use them for presentations or pointing at the night sky and there must be dozens upon dozens of other legitimate uses for self conatained, hand portable lasers - including just plain fun!

If any of those people were to use one to dazzle another person, causing a temporary visual disturbance, then they would be guilty of causing Actual Bodily Harm using an offensive weapon. If there was any permanent effect then that offence would escalate to Grievous Bodily Harm. The law has plenty to work with there and we haven't even considered the implications of endangering the safety of passengers in a moving vehicle by targeting the "driver"...

If you want to reduce the number of laser incidents involving aircraft then the most sensible and proportionate response must surely be prosecuting to the full extent of the (existing) law and publicising this to discourage others.